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- What is the difference between union and structure in C?
- Why use union instead of struct?
- What is one difference between a struct and a union?
- Which is better structure or union?
What is the difference between union and structure in C?
In the case of a Structure, there is a specific memory location for every input data member. Thus, it can store multiple values of the various members. In the case of a Union, there is an allocation of only one shared memory for all the input data members. Thus, it stores one value at a time for all of its members.
Why use union instead of struct?
With a union, you're only supposed to use one of the elements, because they're all stored at the same spot. This makes it useful when you want to store something that could be one of several types. A struct, on the other hand, has a separate memory location for each of its elements and they all can be used at once.
What is one difference between a struct and a union?
A structure is a custom data type that holds multiple members of different data type under a single unit where union is a user defined data type that combine object of different data type in the exact memory location.
Which is better structure or union?
If you want to use same memory location for two or more members, union is the best for that. Unions are similar to the structure. Union variables are created in same manner as structure variables. The keyword “union” is used to define unions in C language.
